1 /*
2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3 * Copyright (c) 2017-2018 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "tests.h"
30
31 #include <stdio.h>
32 #include <stddef.h>
33 #include "test_nlattr.h"
34 #include <linux/pkt_sched.h>
35 #include <linux/rtnetlink.h>
36
37 static void
init_tcmsg(struct nlmsghdr * const nlh,const unsigned int msg_len)38 init_tcmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
39 {
40 SET_STRUCT(struct nlmsghdr, nlh,
41 .nlmsg_len = msg_len,
42 .nlmsg_type = RTM_GETQDISC,
43 .nlmsg_flags = NLM_F_DUMP
44 );
45
46 struct tcmsg *const msg = NLMSG_DATA(nlh);
47 SET_STRUCT(struct tcmsg, msg,
48 .tcm_family = AF_UNIX,
49 .tcm_ifindex = ifindex_lo()
50 );
51
52 }
53
54 static void
print_tcmsg(const unsigned int msg_len)55 print_tcmsg(const unsigned int msg_len)
56 {
57 printf("{len=%u, type=RTM_GETQDISC, flags=NLM_F_DUMP"
58 ", seq=0, pid=0}, {tcm_family=AF_UNIX"
59 ", tcm_ifindex=" IFINDEX_LO_STR
60 ", tcm_handle=0, tcm_parent=0, tcm_info=0}",
61 msg_len);
62 }
63
64 int
main(void)65 main(void)
66 {
67 skip_if_unavailable("/proc/self/fd/");
68
69 const int fd = create_nl_socket(NETLINK_ROUTE);
70 const unsigned int hdrlen = sizeof(struct tcmsg);
71 void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
72 NLA_HDRLEN + sizeof(struct tc_stats));
73
74 static char pattern[4096];
75 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
76
77 const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
78 char nla_type_str[256];
79 sprintf(nla_type_str, "%#x /* TCA_??? */", nla_type);
80 TEST_NLATTR_(fd, nlh0, hdrlen,
81 init_tcmsg, print_tcmsg,
82 nla_type, nla_type_str,
83 4, pattern, 4,
84 print_quoted_hex(pattern, 4));
85
86 static const struct tc_stats st = {
87 .bytes = 0xabcdcdbefeadefac,
88 .packets = 0xbcdeaefd,
89 .drops = 0xcdedafed,
90 .overlimits = 0xdcdbefad,
91 .bps = 0xefaebfad,
92 .pps = 0xfefbaedb,
93 .qlen = 0xabcdefab,
94 .backlog = 0xbdeabeab
95 };
96 char buf[offsetofend(struct tc_stats, backlog)];
97 memcpy(buf, &st, sizeof(buf));
98 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
99 init_tcmsg, print_tcmsg,
100 TCA_STATS, pattern, buf,
101 PRINT_FIELD_U("{", st, bytes);
102 PRINT_FIELD_U(", ", st, packets);
103 PRINT_FIELD_U(", ", st, drops);
104 PRINT_FIELD_U(", ", st, overlimits);
105 PRINT_FIELD_U(", ", st, bps);
106 PRINT_FIELD_U(", ", st, pps);
107 PRINT_FIELD_U(", ", st, qlen);
108 PRINT_FIELD_U(", ", st, backlog);
109 printf("}"));
110
111 static const struct tc_estimator est = {
112 .interval = 0xcd,
113 .ewma_log = 0xab
114 };
115 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
116 init_tcmsg, print_tcmsg,
117 TCA_RATE, pattern, est,
118 PRINT_FIELD_D("{", est, interval);
119 PRINT_FIELD_U(", ", est, ewma_log);
120 printf("}"));
121
122 puts("+++ exited with 0 +++");
123 return 0;
124 }
125